--- x/net/core/link_watch.c
+++ y/net/core/link_watch.c
@@ -230,6 +230,10 @@ static void __linkwatch_run_queue(int ur
 		dev = list_first_entry(&wrk, struct net_device, link_watch_list);
 		list_del_init(&dev->link_watch_list);
 
+		if (dev->reg_state == NETREG_UNREGISTERING ||
+		    dev->reg_state == NETREG_UNREGISTERED)
+			continue;
+
 		if (!netif_device_present(dev) ||
 		    (urgent_only && !linkwatch_urgent_event(dev))) {
 			list_add_tail(&dev->link_watch_list, &lweventlist);